Hello Sanja,
As we agreed during our discussion on slack,
we should port a few preparatory patches
from bb-10.2-compatibility to 10.3, to make our
further compatibility related development easier.
This is the first patch.
Please review.

Thank you , the patch is OK to push. I a bit dislike this mix Lex/lex
thing, but we can not do something about it, logic is clear - one use is
Lex several use cases then lex=Lex.